Mercruiser,"97 Alpha 1 Gen 2. What is chrome ball in upper drive shaft water jacket?
Does anyone know what is this chrome ball bearing looking part, in the water jacket of the upper drive shaft housing, behind the vertical shaft. I found this corroded chrome ball bearing. I can't find a picture of it in my manual. The exploded view don't list it. Does anyone know what it is? If so, how do I get it out to clean it up. It looks like its at the top of the oil passage, but it's in the bottom of the water cavity, on the left front corner, looking from the drive shaft aft, below the stuffer plug. Sure would like to know what it is and how to get at it. .

Does anyone know what is this chrome ball bearing looking part, in the water jacket of the upper drive shaft housing, behind the vertical shaft. I found this corroded chrome ball bearing. I can't find a picture of it in my manual. The exploded view don't list it. Does anyone know what it is? If so, how do I get it out to clean it up. It looks like its at the top of the oil passage, but it's in the bottom of the water cavity, on the left front corner, looking from the drive shaft aft, below the stuffer plug. Sure would like to know what it is and how to get at it. .